Herbert Xu 493b2ed3f7 crypto: algif_hash - Handle NULL hashes correctly ...

Right now attempting to read an empty hash simply returns zeroed
bytes, this patch corrects this by calling the digest function
using an empty input.

Reported-by: Russell King - ARM Linux <linux@armlinux.org.uk>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

2016-09-07 21:08:28 +08:00

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